Originally Posted by Prism99
I believe the dental floss needs to be unwaxed.
That was also what I was told by my service tech. Also, when the electronics freeze up, it is suppose to be a safety precaution. I simply "reboot" my machine by turning it off, wait a few minutes and turn it back on. I use this time to clean the upper thread tension and bobbin area. Usually works for me!
Good Luck!